MADRID (June 6, 2016) – ROTOR Bike Components has yet again embraced the challenge to improve upon so-called bottom bracket standards by introducing its latest UBB4630 series bottom bracket, compatible with PF30, BB386, and BBright shells.
“The motive for the UBB4630 was to address challenges related to bottom bracket installation and durability with respect to specific frames,” said David Martínez, head of engineering at ROTOR. “We added the UBB4630 to reinforce our UBB range.”
Crafted from 7000 series aluminum alloy, the UBB4630 uses a threaded sleeve to lock both cups in place – without having all the locking effort rely on the press fit shell, thus providing a uniform spin and avoiding undesired noises. The flush fitting in the press fit region prevents bearing overload and also improves bearing alignment for a longer bearing life. The external bearing location affords a smoother spin and increased BB shell stiffness for PF30 and BBright standards. The internal sleeve also prevents cable guides from rubbing against rotating parts.
The new UBB weighs in at 109 grams and is available in both steel and ceramic. MSRP is 89.99€ (steel) and 199.99€ (ceramic).
The UBB4630 is the “yes” component to “Is this compatible with my PF30, BB386, and BBright frame?”